Insider · CIK 0001992979
Hans-Peter Gerber
Files at STRO (SUTRO BIOPHARMA, INC.). First filing Oct 16, 2025, latest Oct 16, 2025.
Hans-Peter Gerber files SEC Form 4 as officer at STRO (SUTRO BIOPHARMA, INC.). Since Oct 16, 2025, Hans-Peter Gerber has reported 1 open-market buy worth $14k and 0 open-market sells worth $0, the latest filed on Oct 16, 2025.
A track record needs three past buys with six months of prices behind them; Hans-Peter Gerber has 0, so none is measured yet.
The newest scored trade: bought $14k of STRO on Oct 15, 2025, filed Oct 16, 2025, scored 36 (weak). In the last 12 months: 1 buy worth $14k and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
STRO: SUTRO BIOPHARMA, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 36Weak | SUTRO BIOPHARMA, INC. | $14k 17,000 shares | +31% | - |
Transactions
Every row this insider has filed, 21 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 18, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +3,750 | $0.00 | $0 | 13,712 | 21 d ago |
| Sep 18, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -1,345 | $15.34 | $21k | 12,367 | 21 d ago |
| Sep 18, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -3,750 | $0.00 | $0 | 3,750 | 21 d ago |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +1,125 | $0.00 | $0 | 8,308 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -463 | $20.47 | $9,478 | 7,845 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +2,843 | $0.00 | $0 | 10,688 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -1,170 | $20.55 | $24k | 9,518 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -1,125 | $0.00 | $0 | 2,250 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -2,843 | $0.00 | $0 | 8,532 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Restricted Stock Units (RSUs)derivative | +5,000 | $0.00 | $0 | 5,000 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Stock Option (right to buy)derivative | +40,000 | $0.00 | $0 | 40,000 | Mar 3, 2026 |
| Dec 23, 2025 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Stock Option (right to buy)derivative | +7,925 | $0.00 | $0 | 7,925 | Dec 29, 2025 |
| Oct 15, 2025 | STRO SUTRO BIOPHARMA, INC. | POpen-market purchase Common Stock | +17,000 | $0.80 | $14k | 71,832 | Oct 16, 2025 |
| Sep 18, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +37,500 | $0.00 | $0 | 68,249 | Sep 22, 2025 |
| Sep 18, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -13,417 | $0.90 | $12k | 54,832 | Sep 22, 2025 |
| Sep 18, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -37,500 | $0.00 | $0 | 75,000 | Sep 22, 2025 |
| Apr 4, 2025 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Stock Option (Right to Buy)derivative | +122,500 | $0.00 | $0 | 122,500 | Apr 8, 2025 |
| Apr 4, 2025 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Restricted Stock Units (RSUs)derivative | +113,750 | $0.00 | $0 | 113,750 | Apr 8, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +11,250 | $0.00 | $0 | 35,370 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -4,621 | $1.59 | $7,347 | 30,749 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -11,250 | $0.00 | $0 | 33,750 | Mar 4, 2025 |
Questions about Hans-Peter Gerber
Answered from the filings on this page, as of the latest one.
Is Hans-Peter Gerber buying or selling?
In the last 12 months Hans-Peter Gerber reported 1 open-market buy worth $14k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $14k of STRO on Oct 15, 2025. Grants, option exercises and tax withholding are not counted.
How did Hans-Peter Gerber's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Hans-Peter Gerber has 0.
Where does Hans-Peter Gerber file Form 4?
Hans-Peter Gerber has filed Form 4 at STRO (SUTRO BIOPHARMA, INC.) as CHIEF SCIENTIFIC OFFICER. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.